hmmm... football sites would probably work well with CPA / content locking / streaming offers, so try to join a CPA network like CPA Build or CPA Grip or something like these 2, that offers CPA offers or online football streaming services.
Unfortunately, I can't help more than this because I've never dealt with this niche, but as an avid football fan myself I oftentimes stumble upon sites that have streaming offers on them, so I know that this industry is lucrative. You just need to find the right affiliate networks that have these offers, and join them. And since you're already getting traffic (the holy grail for all online businesses) it shouldn't be hard to get accepted into these affiliate networks
I am one of the people who advocates against using social media traffic for Adsense because "back in my day" (that would be around 2015) when I got banned from Adsense social media traffic was frowned upon by google because it didn't convert very well and so everyone suffered: the advertisers, google, and me (because the traffic didn't convert very well, and so advertisers had no reasons to pay me and google lots of money, and so google - rightfully so - have decided not to be fans of social media traffic)
But like I said, this had been almost 8 years ago. It's possible that in the meantime things have changed, so you need to check Adsense's TOS to see their stand on this source of traffic. I think I've heard someone on the forum say that social media traffic is safe for Adsense nowadays, but I can't vouch for this, so it's better that you check the TOS yourself
